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Setra Systems Model 201

Pressure Transducers

1.0 GENERAL INFORMATION

Every Model 201 has been tested and calibrated before shipment. Specific

performance specifications are shown on page 3 of this Guide.

Setra Systems 201 pressure transducers sense gauge and differential pressure and

convert this pressure difference to a proportional high level analog output. The

Model 201 is a 4 to 20 MA output device.

2.0 MECHANICAL INSTALLATION

2.1 Media Compatibility

Model 201 transducers are designed to be used with any gases or liquids

compatible with 316 Stainless Steel and Inconel® in process port. Reference port

must be exposed to clean dry air or non-corrosive gas.

2.2 Environment

The operating temperature limits of the 201 are -40° to +175°F (-40 to

+80°C). The compensated temperature range is -25 to +175°F (-33 to +80°C).

2.3 Pressure Fittings

Typically, standard pipe fittings and procedures should be used. Excessive torquing

of metal fittings may cause a slight zero shift. The use of plastic fittings typically

results in no noticeable zero shift. Torquing does not appreciably affect linearity or

sensitivity.

2.4 Venting for Gauge Pressure Measurements

All 201 units are vented to atmosphere through a Barbed reference port at the

bottom of the unit.

2.5 Differential Pressure Measurements

Connect low pressure tube to reference port. Note: Media into reference port must be

clean dry air or non-corrosive gas.

Installation Guide

CONDUIT

FITTING

1/2 NPT

7/8 HEX

1/4 - 18 NPT MALE

1.96

POSITIVE PRESSURE

PROCESS PORT

5.41

137

2.00 DIA

50 DIA

REFERENCE PORT

BARBED FITTING

FOR Flexible 1/4” ID

TUBE

CONNECTION

Summary of content (4 pages)

PAGE 1
Installation Guide Setra Systems Model 201 Pressure Transducers 1.0 GENERAL INFORMATION Every Model 201 has been tested and calibrated before shipment. Specific performance specifications are shown on page 3 of this Guide. Setra Systems 201 pressure transducers sense gauge and differential pressure and convert this pressure difference to a proportional high level analog output. The Model 201 is a 4 to 20 MA output device. 2.0 MECHANICAL INSTALLATION 2.
PAGE 2
3.0 ELECTRICAL INSTALLATION The Model 201 is available in the following electrical terminations: Cable; Hirschmann Connector; 4-Pin Bayonet Connector, 3-Screw Terminal Block, and 1/2” male conduit with cable. 3.1 Model 201 Output The Model 201 (current output) is a true 2-wire, 4-20 mA current output device that delivers rated current into any external load of 0-800 ohms.
PAGE 3
4.0 Calibration All Setra current pressure transducers are carefully calibrated to the specific input pressure range vs. output current at the factory so little or no field calibration is necessary. Model 201 transducers are factory calibrated using a 250 ohm load at 24 VDC. External zero and span adjustment capability is approximately ±0.5 mA, individually. Zero and span adjustments are made by removing the pan head screws and turning the potentiometer screw inside. A jeweler’s screwdriver or a .
PAGE 4
5.0 RETURNING PRODUCTS FOR REPAIR Before returning the unit for repair, please contact a Setra application engineer (800-2573872, 978-263-1400) to review information relative to your application . Many times only minor field adjustments may be necessary. When returning a product to Setra, the unit should be carefully packaged and shipped prepaid to: Setra Systems, Inc.